Home / 1,298,411.15-1,791,900.11-717,621.80

Finding the Fourth Proportional to 1,298,411.15, 1,791,900.11 and 717,621.80

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Solution

The fourth proportional to 1,298,411.15, 1,791,900.11 and 717,621.80 is: 990,369.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,298,411.15 : 1,791,900.11 = 717,621.80 : x
  2. Step 2: Convert to fraction form
    1,298,411.15/1,791,900.11 = 717,621.80/x
  3. Step 3: Cross multiply
    1,298,411.15x = 1,791,900.11 × 717,621.80
  4. Step 4: Simplify right side
    1,298,411.15x = 1,285,906,582,358.40
  5. Step 5: Solve for x
    x = 1,285,906,582,358.40/1,298,411.15
  6. Step 6: Final answer
    x = 990,369.33

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.